GAA19CA436
2019-06-28 · Lincoln, California, United States · None · 1 aircraft · Status: Completed
Airport LHM
Current FAA registration · N2RG
- Make / Model
- GROSCH STARDUSTER TOO SA-30
- Year of manufacture
- 2015 · 4 years old at event
- Engine
- LYCOMING O-320 SERIES (150 hp)
- Seats / Engines
- 2 seats · 1 engine
- Last airworthiness date
- 20150819
- ADS-B equipped
- Yes — Mode-S A18ECF
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Probable cause & findings
The pilot's improper landing flare, which resulted in a hard landing, subsequent loss of directional control, runway excursion, and ground-loop.
Factual narrative
The pilot reported that, during the third landing, the biplane landed hard and veered off the left side of the runway. The airplane ground looped and the left main landing gear collapsed. He added that he thought the tailwheel was swiveling, but not turning with the rudder. While working on repairs, he observed that the shear pins on the "Mollie heavy duty tailwheel" sheared off, which resulted in the tailwheel not working properly. The airplane sustained substantial damage to the lower right wing. The airport's automated weather observation station reported that, about 8 minutes before the accident, the wind was from 200° at 3 knots. The pilot landed the airplane on runway 15. The airplane was not made available to the Federal Aviation Administration or the National Transportation Safety Board for examination. The pilot reported that, during the third landing that day, the biplane landed hard and veered off the left side of the runway. The airplane ground looped, and the left main landing gear collapsed. The pilot added that he thought the tailwheel was swiveling but not turning with the rudder. While working on repairs, he observed that the shear pins on the tailwheel had sheared off. The airplane sustained substantial damage to the lower right wing. The airplane was not made available to the National Transportation Safety Board for examination, so the reason for the anomaly reported by the pilot could not be determined. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12
NTSB Findings
FAA avdata. C = Cause, F = Factor.
- C Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Landing flare-Not attained/maintained - C
- C Personnel issues-Task performance-Use of equip/info-Aircraft control-Pilot - C
- C Aircraft-Aircraft oper/perf/capability-Performance/control parameters-Directional control-Not attained/maintained - C
Verbatim from NTSB's published report. Source file
NTSB_2019_GAA19CA436.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
data.ntsb.gov ↗.
Search this event elsewhere
External sources are reported, not agency: signal that something happened, not fact about what happened.
- TallyAero Live Wire Aviation press
- NTSB CAROL Agency ↗
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Related research
Matched on aircraft type or causal vocabulary (runway excursion). All research papers
- SKYbrary (Eurocontrol) 2024 · SKYbrary article Runway Excursion — SKYbrary Knowledge Base
SKYbrary runway excursion review — RE-OE (overruns) + RE-LO (lateral). Risk drivers: long landing, high approach speed, contaminated surface, tailwind, mis-set autobrakes.
- NTSB Aircraft Accident Reports 2019 · Accident report Embraer ERJ 175 Runway Excursion at Charlotte Douglas
Republic Airline ERJ-175 runway excursion CLT, January 2018. Examines a low-energy runway excursion involving misuse of autobrakes + thrust reverser response after a high-crosswind landing on a contam…
- NASA NTRS 2025 · Presentation Uncovering Resilient Behavior in the Aviation Safety Reporting System Using Large Language Models
Resiliency is present in everyday life, both in system design and exhibited by the operators that function within these systems.
- NASA NTRS 2025 · Conference Paper Uncovering Resilient Behavior in the Aviation Safety Reporting System Using Large Language Models
Resiliency is present in everyday life, both in system design and exhibited by the operators that function within these systems.
- Flight Safety Foundation 2024 · FSF / AeroSafety World Runway Safety Initiative Final Report (RSI)
Foundation Runway Safety Initiative final report — comprehensive analysis of runway excursion + incursion risk drivers worldwide.
- Semantic Scholar 2020 · Article Towards online prediction of safety-critical landing metrics in aviation using supervised machine learning
Abstract In recent years, due to the increased availability of data and improvements in computing power, application of machine learning techniques to various aviation safety problems for identifying,…